diff --git a/nix/git-identities/hooks/cabal/pre-commit b/nix/git-identities/hooks/cabal/pre-commit
index 8d97c752..51217183 100755
--- a/nix/git-identities/hooks/cabal/pre-commit
+++ b/nix/git-identities/hooks/cabal/pre-commit
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+set -euo pipefail
 
 make style
+make doctest
 make lint